Updating bios in ubuntu
On occasion, users may wish to completely reset an SSD's cells to the same virgin state they were at the time the device was installed thus restoring it to its factory default write performance.
Write performance is known to degrade over time even on SSDs with native TRIM support.
Both result in the device's password security settings to be set to frozen, as shown in below output: Security: Master password revision code = 65534 supported not enabled not locked frozen not expired: security count supported: enhanced erase 4min for SECURITY ERASE UNIT. Operations like formatting the device or installing operating systems are not affected by the "security freeze".
The above output shows the device is not locked by a HDD-password on boot and the frozen state safeguards the device against malwares which may try to lock it by setting a password to it at runtime.
This article covers special topics for operating Solid State Drives (SSDs) and other flash-memory based storage devices.
If you want to partition an SSD for a specific purpose, it may be useful to consider the List of file systems optimized for flash memory.
A techspot article shows performance benchmark examples of before and after filling an SSD with data.
As of Linux kernel version 3.8 onwards, support for TRIM was continually added for the different filesystems.
Follow the tips in Improving performance#Storage devices to maximize the performance of your drives.
For the Intel DH67CL/BL motherboard, for example, the motherboard has to be set to "maintenance mode" by a physical jumper to access the settings (see , ).
If you intend to erase the SSD, see Securely wipe disk#hdparm and #SSD memory cell clearing below.
To query the units activity and status, see journalctl.
To change the periodicity of the timer or the command run, edit the provided unit files.Ubuntu: see this article and the related blueprint).Note: Enabling this option will "issue discards to a logical volumes's underlying physical volume(s) when the logical volume is no longer using the physical volumes' space (e.g.As noted in #Hdparm shows "frozen" state setting a password for a storage device (SSD/HDD) in the BIOS may also initialize the hardware encryption of devices supporting it.